robbin



5 Sheets-Sheet l Sept. 6, 1932. .1. F. RoBBlN OAR Filed March 25, 19151 MJU@ ,7221 Fm@ R 072km Sept. 6, 1932. J, F, RQBBlN 1,"875,498

Filed latch 25, 1931 3 Sheets-Sheet 2 Sept; 6, 1932 J. F. -ROBBIN 1,875,498

OAR

Filed laren 2,3. 1951 z sheets-sheet s Effi@ amado? i' Jmb Fm@ Rabbin Patented Sept. 6, 1932 JOSEPH FRED`ROBBIN, y01E" 'GRAND RAPIDS, MICHIGAN Arrli'cation inea march as,

The present'inventionrelates to oarsfor propelling boats; and itsv general objects are.; Y to provideV an improvedv bow-facing? oar to' provide an oar whichmay vbe used in the usual manner and also as vabo'w-facing oar;

in the body of this specification and illustrated by `the accompanying drawings, in which:- 1

Figure` 1 is a top plan view of the middle. parts of a bow-facing oar; Figure 2 is a vertical sectional view thereofV and ofa side of the boat on which the oaris mounted, taken'on line` 2,-2 ofFigures 1 and 3; i Y' Figure 3 is a vertical sectional view` of the same taken on line 3-3 of Figure 2; 1`

Figure 4 is a top planview of the middle parts of theoar, showing one position of the' same in solid lines and anotherl position thereof in dotted lines; A

Figure `5 is a transverse sectional view,` taken on a vertical plane corresponding to line 2- -2 of Figure 3, of middle parts of the oar and a side of the boat on which the oarv is reversely mounted in a" position to be oper-v able in the usual manner, i. e. bya rower facing toward the stern of the boat; e

Figure Gis a top plan view `of a boat and a. pair of -oars mounted in bowfacing operation thereon;

Figure 7 is a vertical sec'tionalview of certain parts shown in Figure 5, taken 4Online 7-7'of that View;

`Figure 8 isa top plan view of middle parts y of the oar, and of a side of the boat, show,-

5g; ing a modifiedy construction of the oar 3 193,1'. serial N o. 524,565.

` yFigure 9 is a vertical sectional view thereof and of a vside of the boat, taken on line '9-9' of Figure 8; and

Figure 10 is a vertical sectional view of the same taken Online 10-10 of Figure 9.

The oar illustrated by these drawings is ofl thebowfacing type, efit is adapted'to be operated by a rower facing the bow Yof the boat. The said oar comprises the blade portion 1 and the handle portion 2, these portions being mounted swingably horizontally by pivot pins 3, 4,V on a member,'designatedl generally 5, and comprising upper and lower horizontally disposed plates 6, 7 spaced to receive said portions of the oar between them,

and connected together by posts 8.

The adjacent ends of said portions 1,v 2 of the oar are connected swingably horizontally by a' pivot pin 9 passing through the endportions of reinforcing bars 10,11 on oar portion land 12, 13 on the portion 2 of the oar, said bars being secured by bolts 14, 15 passing therethrough and through said oar portions respectively. The plates 6, 7 have slots 1,6, 17 therethrough, the pivot pin 4 of oar member -2 extending through the same and being movable ylaterally therein to permit the relative swinging movement of the oar portions, this pivot pin having at its ends disks 18 bearing on the outer surface of said plates in such movement.v

To the plate 7 is united, as by spot welding indicated at 19, a yoke 20 having downwardly extending ears 21 bored at 22 to receive the pintles 23 extending in the boats longitudinal directionand carried by the post portions 24 of a mounting member 25 secured as by screws 26 on the upper edge of the boats gunwale 27.

The oars blades 1 are raised and lowered by the turning movement of the yoke 20 on the pintles 23. The oar is removably mounted on the boat by moving this yoke 2O toward the right hand side of Figure 3, the free ends of the pintles 23 thus entering the bores 22',

`whereupon the oar is held inthis mounted osition as articularl well seen in Figure 3, by the catch bar 28 carried on the yokefbyV the screw V29 passing loosely through said bar.1 When it is' desired to remove the oar, the free end of this bar is moved upwardly against the pressure of a spring 31 far enough to pass above the upper end of the post 24.

The oar is shown in Figures 1, 2, 3, 4 and 6 so mounted on the boats gunwale as to be operated by a rower facing the bow 32 of the boat 33 and seated on the thwart 3b.l But, if it be desired to operate the oar in the usual manner, i. e. by a rower facing the stern 35 of the boat and sitting on the thwart 34, the

oar, the plates 6, 7, yoke 20 and parts carried.

thereby are removed from the pintles 23 and turned half-way about the oars longitudinal A axis, and the upstanding parallel arms 37 of a locking element 38 are inserted through the openings 39 in the plate v6 and in straddling relation with thebars 10, 11, to holdthe oars two portions 1, 2 against relative movement, as shown in Figure '5. I

This locking elements portion 60 is turnably'mountedVY on al spindle 40 thrust into a two portions 1, 2 of the oar are thus locked aoV vertical rotary bearing 41 in a postmember 42 secured as by screws 43 to the boats gunwale as seen in Figure 5. jv In this operation of the oar by arower facing rearwardly, the

togetherand the entire oar swingsk about the axis of the spindle as in a'rowlock of usual form. The spindle 40 has a rounded` head 61 011 which the plate 6 bears so that the blades 1 may be raised Vand lowered.

In the modified construction shown in Figures 7, 8 and 9,V the bow-facing oar has blade and handle 'portions 11 and 21 carried swingably horizontally by the member 51 comprising parallel plates G1, 71, and operates as does j ings or hereinbefore the oar `Shown in 'Figures 1, 2, etc. But in this modified construction the .ends of the bars `101, 111 are connected to the ends of the bars `v121, 131 'by a Hookes joint :(or other similarly Aacting joint) comprising the part 50 whose aligned spindles 51 turn in bearings 52m bars 101,111, and whose spindles 53 (atr right angles to spindles 51) turn in bearings 54 in bars 121, 131, these bars being mountedl on the oar portions 11, 21 by bolts 141, 151 respectively. A sleeve 55 in which the oar p0rtion 1 bears turnably has aligned pivot pins 31 turnable in bearings in said plates, and a sleeve 56 in which thel oar portion 2 bears turnably has aligned pivot pins 41 bearing middle-member having a yslide bearing in fixed relation therewith extending in the oars longitudinal direction; a blade'portion and a handle portion having their adjacent ends directly connected pivotally, one of said portions being mounted on the middle member swingably, and the other one of said portions being mounted on the middle member swingably and slidably in said bearing.

2. In an oar of the character described: a middle member comprising rigidly connected parallel plates having slide bearings elongated in the oars longitudinal direction; a blade portion and a handle portion between the plates, each of said portions having a pair of bars rigidly secured on its opposite sides by bolts extending therethrough, the adjacent ends of the bars extending inwardly from the adjacent ends of said portions and being swingably connected by a pivot pin passing Vthrough said ends ofthe bars, one of said portions being mounted on the plates by a pivot pin passing therethrough and through the pair of bars secured-to said portion, and the other one of'said portions being mounted pivotally and slidably on the plates by a pivot pin extending through said bearing and through the pair of bars secured to said second-mentioned portion. j

l 3.' In an oar of the character described for propelling a boat having a spindle extending inthe boats longitudinal direction: a middle member having a slide bearing in fixed relation therewith extending in the oars longitudinal direction and-a rotary bearing removably receivingthe spindle turnably therein; a blade portion and a. handle portion having their'adjacent ends connected pivotally, one l of said portions being mounted on the middle member swingably, and the other one Yof said portions being mounted on the middle member swingably and slidably in said slide bearmg.

propelling a' boat having a spindle extending in the boats longitudinal direction: a middle member having a slide bearing in fixed relation therewith extending in the oars longitudin'al direction` and a rotary bearing removably receiving the spindle turnably therein ga'blade portion and a handle portion having their adjacent ends connected pivotally, one of said portions being mounted on the middle member swingably, and the other one of said portions being mounted on the middle member swingably and slidably in said slide 4. In an oar of the character described for bearing,`a releasable catch for holding the I middle member on the spindle.

5. In an oar of the character described for propelling a boatfhaving upwardly extending posts spaced in the boats longitudinal direction and carrying aligned spindles extending in said direction: a middle member having a slide bearing extending in the oars longitudinal direction andV downwardly extending ears spaced correspondingly with the posts, having aligned rotary bearings removably receiving the spindles respectively turnably therein; a bladeportion and a handle portion having their adjacent ends connected pivot-ally, one of said portions ybeing mounted on the middle member swingably and the other one of said portions being` mounted on the middle member swingably and slidably in said slide bearing.

6. In an oar of the character described forpropelling a boat having upwardly extending posts spaced in the boats longitudinal direction and carrying aligned spindles extending in said direction: a middle member havingv a slide bearing extending in the oars longitudinal direction and downwardly extending kears spaced correspondingly with the posts,

said slide bearing, means for releasably holding the middle member on the spindles coinprising a catch bar mounted on the middle member and spring-pressed into holding engagement with one of the posts.

7. In an oar of the character described: al

middle member having keeper openings; a

lade portion and a handle portion pivotally mounted on the middle member and having their adjacent ends connected in swingable interrelation an element comprising parallel bars removably thrust into the keeper openings in straddling relation with one of said portions for locking said portions againstr relatively swinging movement; means for mounting the oar on a boat in alternately bow-'facing and rear-facing rowing position.

8. In an oar of the character described: a middle member; a blade portion and a handle portion pivotally mounted on the middle member and having their adjacent ends vconnected in swingable interrelation; ieleasable means for mounting the middle member on a boat turiiably about an axis extending in the boats longitudinal direction; an element releasably locking said portions against relatively swinging movement, said element being removably mounted on the boat turnably.

9. In an oar of the character described: a middle member; a blade `portion and a handle portion pivotally mounted on the middle member and having their adjacent ends connected in swingable interrelation; releasable means for mounting the middle member on a boat turnably about an axis extending in the boats longitudinal direction; an element releasably locking said portions against relatively swinging movement, said element being removably mounted on the boat turnably in horizontal and vertical directions.

10. In an oar of the character described for propelling a boat having a spindle extending in the boats longitudinal direction and a vertical bearing: a middle member having on one side a rotaryfbearing removably receiving the spindle turnably therein, and on theopposite side a keeper opening; a blade portion and a handle portion pivotally mounted on thev middle member and having their adjacent'ends connected in swingable interrelation; a pivot pin turnable in said vertical bearing; an element turiiable on the pivot pin and removably thrust into the keeper opening in engagement with one of said portions for locking lsaid portions against relatively swinging movement, saidk element being mounted on said pivot pin turnably in horizontal and vertical directions.

11. In an oar of the character described: a middle member; a blade portion and a handle portion mounted on the middle member swingably in a common plane and having their adjacent yends connected in swingable interrelation; an element releasably locking said portions against relatively swinging movement; means for removably mounting the middle member at one side thereof on a boat turnably about an axis extending in the boats longitudinal direction; means for removably mounting the middle member at the opposite side thereof on a boat turnably in horizontal and vertical directions.

12. In an oar of the character described for propelling a boat having a spindle extending in the boats longitudinal direction 100 and an axially vertical socket: a middle memi ber having on one side a rotary bearing removably receiving the spindle turnably therein, and on the opposite side a keeper opening; a blade portion and a handle por- 105 tion pivotally mounted on the middle member and having theiradj acent ends connected in swingable interrelation; an element having a part removably inserted into the keeper opening in engagement with one of said por- 110 tions for locking said portions against relative swinging movement and a part removablyinserted in said socket, said parts being connected turnably in horizontal and vertical directions.

In testimony whereof I have hereunto set my hand at Grand Rapids, Michigan, this 19th day of March, 1931.

JOSEPHFRED ROBBIN. 

